CN105247231B - The manufacture method of cage for rolling bearing, rolling bearing and cage for rolling bearing - Google Patents
The manufacture method of cage for rolling bearing, rolling bearing and cage for rolling bearing Download PDFInfo
- Publication number
- CN105247231B CN105247231B CN201480029901.1A CN201480029901A CN105247231B CN 105247231 B CN105247231 B CN 105247231B CN 201480029901 A CN201480029901 A CN 201480029901A CN 105247231 B CN105247231 B CN 105247231B
- Authority
- CN
- China
- Prior art keywords
- retainer
- main body
- resin portion
- rolling bearing
- ball
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
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- 238000000034 method Methods 0.000 title claims description 10
- 239000011347 resin Substances 0.000 claims abstract description 97
- 229920005989 resin Polymers 0.000 claims abstract description 97
- 230000002093 peripheral effect Effects 0.000 claims abstract description 36
- 238000001746 injection moulding Methods 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims description 26
- 239000012779 reinforcing material Substances 0.000 claims description 9
- 229920005992 thermoplastic resin Polymers 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 description 12
- 239000007788 liquid Substances 0.000 description 12
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 10
- 229910052751 metal Inorganic materials 0.000 description 10
- 239000002184 metal Substances 0.000 description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 6
- 238000005461 lubrication Methods 0.000 description 6
- 238000003754 machining Methods 0.000 description 6
- 239000004810 polytetrafluoroethylene Substances 0.000 description 6
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- 239000001257 hydrogen Substances 0.000 description 5
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- 238000007493 shaping process Methods 0.000 description 5
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- 101710185324 GTP cyclohydrolase 1 feedback regulatory protein Proteins 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 4
- 238000010306 acid treatment Methods 0.000 description 4
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- 229920000049 Carbon (fiber) Polymers 0.000 description 3
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
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- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
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- 239000004519 grease Substances 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 229910001105 martensitic stainless steel Inorganic materials 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
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- 239000000203 mixture Substances 0.000 description 2
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- 229920000069 polyphenylene sulfide Polymers 0.000 description 2
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- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 1
- 240000008168 Ficus benjamina Species 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 241000222712 Kinetoplastida Species 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
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- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
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- 230000003340 mental effect Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
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- 230000003647 oxidation Effects 0.000 description 1
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- 229910000601 superalloy Inorganic materials 0.000 description 1
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/66—Special parts or details in view of lubrication
- F16C33/6696—Special parts or details in view of lubrication with solids as lubricant, e.g. dry coatings, powder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0025—Preventing defects on the moulded article, e.g. weld lines, shrinkage marks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/2628—Moulds with mould parts forming holes in or through the moulded article, e.g. for bearing cages
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/2701—Details not specific to hot or cold runner channels
- B29C45/2708—Gates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
- F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/38—Ball cages
- F16C33/3831—Ball cages with hybrid structure, i.e. with parts made of distinct materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/38—Ball cages
- F16C33/3837—Massive or moulded cages having cage pockets surrounding the balls, e.g. machined window cages
- F16C33/3843—Massive or moulded cages having cage pockets surrounding the balls, e.g. machined window cages formed as one-piece cages, i.e. monoblock cages
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/38—Ball cages
- F16C33/3837—Massive or moulded cages having cage pockets surrounding the balls, e.g. machined window cages
- F16C33/3843—Massive or moulded cages having cage pockets surrounding the balls, e.g. machined window cages formed as one-piece cages, i.e. monoblock cages
- F16C33/3856—Massive or moulded cages having cage pockets surrounding the balls, e.g. machined window cages formed as one-piece cages, i.e. monoblock cages made from plastic, e.g. injection moulded window cages
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/38—Ball cages
- F16C33/3887—Details of individual pockets, e.g. shape or ball retaining means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/38—Ball cages
- F16C33/44—Selection of substances
- F16C33/445—Coatings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2101/00—Use of unspecified macromolecular compounds as moulding material
- B29K2101/12—Thermoplastic materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/0005—Condition, form or state of moulded material or of the material to be shaped containing compounding ingredients
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/04—Bearings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/04—Bearings
- B29L2031/045—Bushes therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
- F16C19/16—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls
- F16C19/163—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls with angular contact
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2208/00—Plastics; Synthetic resins, e.g. rubbers
- F16C2208/02—Plastics; Synthetic resins, e.g. rubbers comprising fillers, fibres
- F16C2208/04—Glass fibres
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2220/00—Shaping
- F16C2220/02—Shaping by casting
- F16C2220/04—Shaping by casting by injection-moulding
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2300/00—Application independent of particular apparatuses
- F16C2300/40—Application independent of particular apparatuses related to environment, i.e. operating conditions
- F16C2300/52—Application independent of particular apparatuses related to environment, i.e. operating conditions low temperature, e.g. cryogenic temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2326/00—Articles relating to transporting
- F16C2326/47—Cosmonautic vehicles, i.e. bearings adapted for use in outer-space
Abstract
The retainer (40) of the present invention includes：Circular main body (42), it has the multiple ball pocket (42a) for housing ball (30)；And resin portion (44), it is by regarding main body (42) as mosaic component and being formed using the resin injection moulding comprising kollag.Resin portion (44) is provided integrally with Part I (44a) and Part II (44b), the Part I (44a) is arranged on the inner peripheral surface of the ball pocket (42a) of main body (42), formed and slide the multiple ball bag faces (46) to connect with ball (30), the Part II (44b) is arranged on the outer peripheral face (or inner peripheral surface) of main body (42), is formed and slides the guide surface (48) to connect with outer ring (20) (or inner ring (10)).The weld mark (W) of resin portion (44) is formed in the position do not exposed retainer circumferencial direction both ends or not in ball bag face (46).
Description
Technical field
The present invention relates to cage for rolling bearing (hreinafter referred to as " retainer "), there is the rolling bearing to keep
The rolling bearing of device and the manufacture method of retainer.
Background technology
The rolling bearing used in the turbine pump of rocket engine uses under the high speed rotating environment in liquid propellant.
Particularly, rolling bearing turns into extremely low temperature in the case of use in liquified hydrogen, liquid oxygen, therefore can not use common
The mobility lubricants such as the oil that is used in rolling bearing, lubricating grease.In addition, if rolling bearing makes in the state of high speed rotates
With then big circumferential stress can be applied to retainer, therefore it is required that retainer has higher specific strength.
Such as Patent Document 1 discloses the kollags such as PTFE is impregnated in by the reinforcing fiber structure such as glass fibre
Into fabric in, the retainer that is formed by fiber reinforced composite material.The retainer passes through to above-mentioned fiber reinforced composite
Material is machined and formed, therefore exposes the glass fibre cut off on surface.Because the glass fibre connects with rolling element
To touch so that contact of the rolling element with kollag is obstructed, and kollag can not be carried out fully to dividing a word with a hyphen at the end of a line for rolling element, so as to
In the presence of the misgivings for causing the reliability reduction to frictional dissipation.Thus, in patent document 1, to fiber reinforced composite material
After being machined, dissolved by surface conditioning agent (hydrofluoric acid) and remove the glass fibre exposed in finished surface portion.
Citation
Patent document
Patent document 1：Japanese Patent Publication 2-20854 publications
The content of the invention
Invent problem to be solved
However, in retainer as above-mentioned patent document 1, if abrasion advances to the hydrofluoric acid treatment on retainer surface
Degree more than layer can then cause glass fibre to expose, therefore the reliability reduction caused to frictional dissipation as described above be present
Misgivings.On the other hand, if being intended to prevent exposing for glass fibre by thickening hydrofluoric acid treatment layer, hydrofluoric acid treatment can be caused
Time increase is so as to manufacture time increase, and the reduction of glass fibre can cause the intensity decreases of retainer.
The problem to be solved by the present invention is that, there is provided one kind also can in the case of it can not use mobility lubricant
Enough avoid the retainer of insufficient lubrication, the increase of manufacture time and intensity decreases.
For solving the scheme of problem
The present invention completed to solve the problem is related to a kind of cage for rolling bearing, and it is disposed on a pair
Between raceway circle, multiple rolling elements are maintained to the cage for rolling bearing of assigned position, wherein, possess：Circular master
Body, it has the multiple ball pocket for housing the rolling element；And resin portion, it is by regarding the main body as mosaic component simultaneously
Injection moulding is carried out using the resin comprising kollag to form, the resin portion is provided integrally with Part I and second
Point, the Part I is arranged on the inner peripheral surface of the ball pocket of the main body, and formed with sliding what is connected with each rolling element
Multiple ball bag faces, the Part II are arranged on the inner peripheral surface or outer peripheral face of the main body, and formed with the pair of rolling
The raceway circle of a side slides the guide surface to connect in road circle, and the weld mark of the resin portion forms not protecting in the ball bag face
The position that holder circumferencial direction both ends are exposed.
Like this, in the retainer of the present invention, the ball bag face to connect is slided with rolling element and slides phase with raceway circle
The guide surface connect is formed by the resin comprising kollag, therefore the kollag by making to include in resin migrates to rolling
It can be lubricated on kinetoplast and raceway circle.Now, due to the intensity of device can be ensured that by main body, therefore can
The reinforcing material for making to allocate in resin portion reduces or is zero.Thus, avoid the ball bag face of resin portion composition, reveal on guide surface
Go out the situation of substantial amounts of glass fibre etc., insufficient lubrication can be prevented.Further, since hydrofluoric acid treatment need not be carried out, therefore energy
Enough prevent from manufacturing increase, the intensity decreases of retainer of time.
However, when rolling bearing rotates, because radial load, alignment error can cause rolling element to be protected relative to retainer edge
The relative movement of holder circumferencial direction (produces delay of advancing), therefore rolling element and the retainer circumferencial direction both ends frequency in ball bag face
Numerous contact.Thus, as described, by the way that the weld mark of the resin portion of fragility is formed in ball bag face not in retainer circumference
The position that direction both ends are exposed, the reliability of retainer can be improved.Specifically, weld mark can be made only in ball bag
Side (reference picture 3) on the retainer axial direction in face, or form the both sides (reference picture on the retainer axial direction in ball bag face
6), or post portion (reference picture 8) between ball bag face is formed.
Worn due to forming the Part I of resin portion in ball bag face and the contact of rolling element, therefore preferably thicken wall
It is thick.If however, thicken the wall thickness of Part I with not changing the size of retainer, accordingly the thickness of main body is thinning, therefore
The misgivings of the intensity deficiency of main body be present.Particularly, at a high speed rotation rolling bearing situation, on retainer produce be based on from
The big circumferential stress of mental and physical efforts, if therefore be arranged on the annulus of the retainer axial direction both sides in ball bag face retainer it is axially thick
Spend it is thin, then exist for described circumferential stress intensity deficiency misgivings.
In order to avoid misgivings as described above, for example, the Part I of resin portion can be made in retainer circumferencial direction
Wall thickness of the wall ratio at both ends at retainer axial direction both ends is thick.Like this, the Part I of resin portion is made to justify in retainer
The wall thickness at circumferential direction both ends is relative to be thickened, the allowance worn caused by so as to add with the contact of rolling element and make reliable
Property improve.In addition, the wall thickness at the retainer axial direction both ends of the Part I of resin portion is set to be thinned relatively, so as to accordingly can
The wall thickness for thickening main body (particularly, is arranged on the retainer axial direction thickness of the annulus of the retainer axial direction both sides of ball pocket
Degree), improve the intensity of the retainer for circumferential stress.
Recess is formed on the guide surface that can be set on the Part II of resin portion.Thus, connect in mutual slip
Gap between guide surface and raceway circle easily forms liquid film (such as the liquid formed by the propellant of the turbine pump of rocket engine
Film), and then lubricity and wear resistance improve.
If forming recess on the surface of main body, resin portion is entered the recess, then can make main body and tree using anchor effect
Fat portion is affixed securely.Such recess can be set to the small chi obtained based on the roughened processing such as etching process, shot-peening
It is very little, the larger size based on machining etc. can also be set to.
Described retainer, which can be fitted into the rolling bearing for possessing a pair of raceway circles and multiple rolling elements, to be used.So
Rolling bearing be adapted to oil-free environment under use.
Above-mentioned retainer can manufacture by the following method：By regarding the main body of annular shape as mosaic component and utilizing
Resin material comprising kollag carries out injection moulding to form resin portion, and the circular main body has described in collecting
Multiple ball pocket of rolling element, the resin portion are provided integrally with Part I and Part II, and the Part I is arranged on
The inner peripheral surface of the ball pocket of the main body, and formed and slide the multiple ball bag faces to connect, the Part II with each rolling element
The inner peripheral surface or outer peripheral face of the main body are arranged on, and is formed to slide with the raceway circle of a side in the pair of raceway circle and connected
Guide surface.
An end face in axial direction in carrying out the mould of injection moulding of resin portion, to the Part II of resin portion
The forming surface being molded is provided with the cast gate for the material for projecting resin portion.Thus, it is free to set in above-mentioned forming face
Determine the retainer circumferential locations of cast gate, thus the weld mark of resin portion can be arranged on desired position (ball bag face
The position do not exposed at retainer circumferencial direction both ends).
If for example, above-mentioned cast gate is set into diaphragm gate, side that can only on the retainer axial direction in ball bag face
Form weld mark (reference picture 3 and Fig. 4).In addition, above-mentioned cast gate can also be set to pin gate.In this case, if
Retainer circumferencial direction region between in above-mentioned forming surface, multiple ball bag faces sets pin gate, then can be in each ball
The retainer axial direction both sides in bag face form weld mark (reference picture 6 and Fig. 7).If in addition, in above-mentioned forming surface, ball bag
The circumferential locations of the retainer circumferencial direction central portion in face set pin gate, then can be formed in the post portion between ball bag face
Weld mark (reference picture 8 and Fig. 9).
Invention effect
As described above, according to the present invention, in the case of it can not use mobility lubricant in rolling bearing
The intensity decreases of insufficient lubrication, the increase of manufacture time and retainer can be avoided.
Brief description of the drawings
Fig. 1 is the sectional view of the rolling bearing (angular contact ball bearing) of one embodiment of the present invention.
Fig. 2 is the sectional stereogram of the retainer of above-mentioned rolling bearing.
Fig. 3 is the side view of above-mentioned retainer.
Fig. 4 is the side view of the cavity for the resin portion for being represented schematically as the above-mentioned retainer of shape.
Fig. 5 is the sectional view of above-mentioned cavity.
Fig. 6 is the side view of the retainer of other embodiments.
Fig. 7 is the side view of the cavity of the resin portion for the retainer for being represented schematically as shape Fig. 6.
Fig. 8 is the side view of the retainer of other embodiments.
Fig. 9 is the side view of the cavity of the resin portion for the retainer for being represented schematically as shape Fig. 8.
Figure 10 is the sectional view of the retainer of other embodiments.
Figure 11 is the side view of the retainer of other embodiments.
Figure 12 (a) is the side view of the retainer of other embodiments.
Figure 12 (b) is the side view of the retainer of other embodiments.
Figure 12 (c) is the side view of the retainer of other embodiments.
Figure 12 (d) is the side view of the retainer of other embodiments.
Figure 13 is the sectional view of the retainer of other embodiments.
Figure 14 is the sectional view of the retainer of other embodiments.
Figure 15 is loaded into the sectional view of the rocket engine turbine pump of above-mentioned rolling bearing.
Figure 16 is the stereogram of pin ball-on-disk film tester.
Figure 17 is the pin in the case of the allotment ratio of the kollag contained in the pin for representing to change above-mentioned testing machine
Coefficient of friction figure.
Figure 18 is the rolling in the case of the allotment ratio of the kollag contained in the pin for representing to change above-mentioned testing machine
The figure of the wear extent of pearl.
Embodiment
Rolling bearing in Fig. 1 as one embodiment of the present invention, and show angular contact ball bearing 1.Angular contact ball
Bearing 1 possesses：A pair of raceway circles (inner ring 10 and outer ring 20), multiple rolling elements (ball 30), retainers 40.Angular contact ball axle
1 is held to use in the environment of oil-free environment is i.e. without using the mobility lubricant such as oil, lubricating grease.The angular contact of present embodiment
The internal diameter (internal diameter of inner ring 10) of ball bearing 1 is 10~100mm or so, and axial dimension is 10~40mm or so.Angular contact ball axle
Hold 1 has contact angle as illustrated.Contact angle is defined as, perpendicular to the vertical plane of bearing centre axle (sagittal plane), with
Position (in Fig. 1 shown in the single dotted broken line) angulation made a concerted effort of raceway circle to the power of rolling element transmission.
In the outer peripheral face of inner ring 10, roller surface 12 is set.Inner peripheral surface in outer ring 20 sets roller surface 22.Inner ring 10 and
Outer ring 20 is formed by metal, such as is formed by martensitic stain less steel (SUS440C etc.).Multiple balls 30 configure the rolling in inner ring 10
Between road face 12 and the roller surface 22 of outer ring 20.Ball 30 is by such as the metals such as martensitic stain less steel (SUS440C), ceramic material
Material is formed.It should be noted that can also be in the table of the roller surface 12 of inner ring 10, the roller surface 22 of outer ring 20 and ball 30
Implement the PTFE sputtering envelopes for the purpose of reducing initial friction in face.
Retainer 40 is configured between outer ring 20 and inner ring 10.The angular contact ball bearing 1 of present embodiment is by making guarantor
The outer peripheral face of holder 40 and the inner peripheral surface (specifically, the shoulder face for being arranged on retainer axial direction both sides of roller surface 22) of outer ring 20
Slide the bearing of outer ring guiding connect and guided along radial direction retainer 40, so-called.
Retainer 40 is made up of main body 42 and resin portion 44.Main body 42 forms ring-type, is formed in illustrated example cylindric.
In main body 42, as shown in Fig. 2 multiple ball pocket 42a are along the circumferential direction equally spaced, respectively housed in each ball pocket 42a
There is a ball 30.Main body 42 is formed by the material than the high intensity of resin portion 44, is formed by such as resin composite materials, metal.
As resin composite materials, the fibre reinforced plastics materials such as CFRP, GFRP can be used.In addition, as metal, can be with use example
Such as aluminium alloy, magnesium alloy, carbon steel, stainless steel, copper alloy melting material or sintering metal.Particularly, in high speed rotating environment
In the case of the lower bearing used, preferably using the high material of specific strength.As such material, can enumerate such as CFRP,
GFRP, aluminium alloy, titanium alloy, magnesium alloy.In addition, in the case of the bearing that liquid hydrogen turbopump uses in, preferably use
The low material of hydrogen reactivity.As such material, such as CFRP, GFRP, aluminium alloy can be enumerated.Also, liquid oxygen turbine
In the case of the bearing used in pump, preferably using the low material of oxidation.As such material, can enumerate for example
GFRP。
Resin portion 44 is formed by the way that main body 42 to be used as to the injection moulding of mosaic component, and is provided integrally with Part I
44a and Part II 44b.Part I 44a is arranged on each ball pocket 42a of main body 42 inner peripheral surface, first in illustrated example
The whole face of part 44a covering ball pocket 42a cylinder planar inner peripheral surface.The Part I 44a's being arranged at each ball pocket 42a
The ball bag face 46 to connect performance function is slided as with each rolling element 30 in surface (inner peripheral surface).Part II 44b is arranged on main body
On 42 outer peripheral face, Part II 44b covers the whole face of the cylinder planar outer peripheral face of main body 42 in illustrated example.Part II
44b surface (outer peripheral face) plays function as the guide surface 48 to connect is slided with the inner peripheral surface of outer ring 20.Part I 44a
Thickness and Part II 44b thickness it is impartial, if mobility when considering injection moulding, preferably more than 0.1mm, and
And if consider the reliability to abrasion, more preferably more than 0.2mm.
As shown in figure 3, weld mark W is formed in resin portion 44.Weld mark W formed in ball bag face 46 not in retainer
The position that circumferencial direction both ends are exposed.In the present embodiment, weld mark W is made only on the retainer axial direction in ball bag face 46
Side (in figure left side).Weld mark W is arranged on the circumferential locations of the retainer circumferencial direction central portion in ball bag face 46, and
It is axially extending approximately along retainer.Reveal to an end face on Part II 44b retainer axial direction weld mark W one end
Go out, the weld mark W other end exposes to the end of the side on the retainer axial direction in ball bag face 46.
Resin portion 44 is formed by the resin comprising kollag.As principal component resin, such as polyethers ether can be used
The thermoplastic resins such as ketone (PEEK), polyphenylene sulfide (PPS), polyamide (PA).Particularly, situation about being used under the low temperature environment of pole
Under, from impact resistance, resistance to chemical reagents, the angle with the adhesion of main body 42, preferably using the small PEEK of linear expansion coefficient.
As kollag, fluororesin (such as PTFE), molybdenum disulfide, graphite etc. can be used.
It can also coordinate reinforcing material in the resin for forming resin portion 44.As reinforcing material, preferably using with carrying
The material of the wear resistance of high retainer, the effect of suppression linear expansion coefficient, can use such as glass fibre (GF), carbon fiber
(CF), magnesia etc..It should be noted that reinforcing material can also be omitted.
It is preferred that the principal component resin (thermoplastic resin) in above-mentioned resin is more than the 45vol% for being capable of injection moulding.
If in addition, considering lubricity, it is necessary to which kollag is deployed into more than 5vol%, it is particularly, it is medium in liquid nitrogen, liquid oxygen
Under the low temperature environment of pole in the case of use, preferably kollag is more than 20vol%.In addition, if kollag exceedes
40vol%, then it can become to be difficult to blend when being kneaded with principal component resin, so as to dispersiveness reduction during injection moulding.
According to the above, the preferably allotment ratio of kollag is 20vol%~40vol%.Also, can also be uncomfortable with enhancing
Material, and according to required wear resistance, linear expansion coefficient, allotment 0vol%~15vol% reinforcing material.According to upper
State content, above-mentioned resin using such as principal component resin as 45vol%~80vol%, kollag for 20vol%~
40vol%, the ratio that reinforcing material is 0vol%~15vol% are allocated.
In order to confirm the suitable allotment ratio of the kollag of the resin portion 44 under the low temperature environment of pole, Figure 16 institutes are utilized
The pin ball disk experimental rig 100 shown has carried out frictional dissipation experiment in liquid nitrogen (under the low temperature environment of pole).Specifically, in liquid
On the same circumference of the upper surface of the disk 101 configured in body nitrogen, compress and be made up of the resin comprising kollag (PTFE)
Pin 102, the ball 103 that is made up of stainless steel, disk 101 is rotated with egulation rotating speed in this condition.Now, pin 102
The kollag contained in resin travels to the upper surface of disk 101, forms film 104 of dividing a word with a hyphen at the end of a line.Utilize the tune of kollag
Experiment as described above, the composition of push-piece 102 are carried out with the different multiple pins 102 of ratio, it is thus identified that the pin in the rotation of disk 101
102 relative to disk 101 coefficient of friction, disk 101 is have rotated the wear extent of the ball 103 after the stipulated time.Figure 17 with
And Figure 18 shows its result.Figure 17 shows the lubricity of the coefficient of waste of pin 102, i.e. resin composite materials, PTFE's
Allotment ratio diminishes when being more than 20vol%.Figure 18 shows the wear extent of ball 103, that is, the lubricity for film 104 of dividing a word with a hyphen at the end of a line, with
Figure 17 is same, the constant when PTFE allotment ratio is more than 20vol%.According to the above, it has been confirmed that particularly
Under the low temperature environment of pole, preferably the allotment ratio of kollag is more than 20vol%.
When above-mentioned angular contact ball bearing 1 rotates, the ball bag face 46 of retainer 40 is slided with ball 30 to connect, and protects
The guide surface 48 (outer peripheral face) of holder 40 slides with the inner peripheral surface (shoulder face) of outer ring 20 to connect.Thus, the solid profit of resin portion 44
Lubrication prescription is divided a word with a hyphen at the end of a line to the shoulder face of the surface of ball 30, outer ring 20, and carries out the profit between retainer 40 and ball 30 and outer ring 20
It is sliding.Also, by travelling to the kollag on ball 30, carry out roller surface 12 and the outer ring 20 of ball 30 and inner ring 10
Roller surface 22 between lubrication.
As described above, by forming retainer 40 by main body 42 and resin portion 44, so as to be born by main body 42
The intensity of retainer 40.The reinforcing material allocated in resin thereby, it is possible to make resin portion 44 reduces or is zero, therefore resin
The reinforcing material contained in portion 44 will not largely expose on ball bag face 46, guide surface 48.Therefore, kollag is from resin portion
44 are not blocked to slip the dividing a word with a hyphen at the end of a line for object part (ball 30 or outer ring 20) that connect, and improve lubricity.
In addition, when angular contact ball bearing 1 rotates, generation ball 30 is relative to retainer 40 on retainer circumferencial direction
Relative movement (advance delay), therefore ball 30 and the retainer circumferencial direction both ends in the ball bag face 46 of retainer 40 are frequent
Contact.Thus, as described above, guarantor is avoided in ball bag face 46 by the way that the weld mark W of the resin portion 44 of low intensity is formed
The region at holder circumferencial direction both ends, so as to improve the intensity of the part.
Next, the manufacture method of above-mentioned retainer 40 is illustrated.
First, main body 42 is formed.For example, by being made up of the resin comprising reinforcing fibers such as carbon fiber, glass fibres
Resin composite materials form main body 42.Or by being machined (cutting etc.) or plastic working (punching press to metal
Processing, forging processing), to form the main body 42 being made up of metal (melting material).Or by under defined sintering temperature
The powder compact for forming mixed metal powder compression molding is sintered, to form the main body 42 being made up of sintering metal.
Afterwards, for the purpose of improving the adhesion of main body 42 and resin portion 44, formed on the surface of main body 42 small recessed
Portion.The micro-valleys are formed by the roughened processing such as etching process (sodium etching, plasma etching etc.), shot-peening, spraying plating.
It is preferred that the surface roughness of the main body 42 after roughened processing is set to be more than because the linear expansion coefficient difference of main body 42 and resin portion 44 is made
Into retainer radial direction on size changing amount.For example, it is aluminium alloy (linear expansion coefficient 24 × 10 in main body 42-6[1/
DEG C]), resin portion 44 be GF strengthen PEEK based materials (linear expansion coefficient 34 × 10-6[1/ DEG C]), ball bag face 46 it is a diameter of
In the case of 8mm, the surface roughness of main body 42 is preferably set to more than Ra10 μm.It should be noted that it can also omit thick
Faceization processing, it is countless small due to being formed on the surface of main body 42 such as in the case where main body 42 is made up of sintering metal
Perforate, therefore do not need roughened processing.
Afterwards, using main body 42 as mosaic component injection-molded resin portion 44.Fig. 4 and Fig. 5 shows and now used
Injection moulding mould cavity 50.Cavity 50 by shaping resin portion 44 Part I 44a the first cavity 52, shaping second
Part 44b the second cavity 54 is formed.In the forming face to forming the second cavity 54, Part II 44b retainer axle
The forming face that another upward (Fig. 4 and Fig. 5 right side) end face is formed is provided with cast gate 60.Present embodiment is poured
Mouthfuls 60 be the diaphragm gate from the complete cycle at the external diameter end of discoid runner 62 along the axially extending ring-type of retainer.Need to illustrate
, Fig. 5 represents to be filled with the state of resin (being represented by scatterplot) in cavity 50, cast gate 60 and runner 62.
When from cast gate 60 to 50 injecting resin of cavity, resin flows as shown in dotted arrow in Fig. 4, empty first
Retainer axial direction side (left side in figure) resin of chamber 52 converges.Converge part formation weld mark W (reference picture 3) at this.In addition,
Molten resin enters the micro-valleys on the surface of main body 42 and solidification, so as to which main body 42 and resin portion 44 are affixed securely.
After the resin has hardened, mold and take out retainer 40 from mould.The resin that have cured in cast gate 60 and the die sinking are same
When torn off, therefore the residual trace of gate cutting is left on retainer 40.Specifically, resin portion 44 Part II 44b guarantor
The residual trace of gate cutting of ring-type is left on another end face on holder axial direction.By to the retainer 40 after being taken out from mould
Machining is implemented in another end face on axial direction, and removes the residual trace of gate cutting.Also, can also be to ball bag face 46, guiding
Finishing of the surface whole implementation based on machining of one or both or the retainer 40 in face 48.It should be noted that
If being needed without special, above-mentioned machining can also be omitted.
The present invention is not limited to above-mentioned embodiment.The weld mark W of retainer 140 shown in Fig. 6 position with it is above-mentioned
Embodiment it is different.Specifically, weld mark W is formed in the retainer axial direction both sides in each ball bag face 46.Fig. 7 represents that shaping should
The cavity 150 of the resin portion 44 of retainer 140.The cast gate 60 of present embodiment is pin gate, and is arranged on to forming cavity
Another (Fig. 7 right side) end face in 150 forming face, Part II 44b retainer axial direction be formed into
On shape face.Cast gate 60 is arranged on equally spaced multiple positions on circumferencial direction, in illustrated example, in the multiple of shaping ball bag face 46
Circumferencial direction region between first cavity 52 sets cast gate 60.When from 60 injecting resin of cast gate, dotted line in resin such as Fig. 7
Flow shown in arrow, converge in the retainer axial direction both sides resin of the first cavity 52 like that.Converge part formation weld mark W at this
(reference picture 6).
The weld mark W of retainer 240 shown in Fig. 8 position is different from above-mentioned embodiment.Specifically, each
Post portion 49 between the retainer circumferencial direction in ball bag face 46, the side on the retainer axial direction in each ball bag face 46 are (left in figure
Side) form weld mark W.Fig. 9 represents to shape the cavity 250 of the resin portion 44 of the retainer 240.The cast gate 60 of present embodiment is
Pin gate, and be arranged on to form cavity 150 forming face in, another on Part II 44b retainer axial direction
In the forming face that (Fig. 7 right side) end face is formed.Cast gate 60 is arranged on equally spaced multiple positions on circumferencial direction, is scheming
In example, the circumferential locations of the retainer circumferencial direction central portion between multiple first cavitys 52 in shaping ball bag face 46
Provided with cast gate 60.When projecting resin from the cast gate 60, as shown in phantom in Figure 9, resin is in a manner of moving into the first cavity 52
Flowing, the side resin between the retainer circumferencial direction of the first cavity 52 and on the retainer axial direction of the first cavity 52
Converge.Converge part formation weld mark W (reference picture 8) at this.
Retainer 340 and the difference of above-mentioned embodiment shown in Figure 10 are, are come off formed with ball 30 is prevented
Projection 44c.Specifically, formed in the Part I 44a of resin portion 44 retainer internal side diameter end towards ball bag face 46
Internal diameter protrude projection 44c.In illustrated example, complete cycles of the projection 44c along ball bag face 46 is formed.It should be noted that also may be used
So that projection 44c is arranged on into the multiple positions separated on the circumferencial direction in ball bag face 46.
Figure 11 is the side view of the retainer 440 of another other embodiments from internal side diameter.The retainer 440 with
The difference of above-mentioned embodiment is, the wall at the Part I 44a of resin portion 44 retainer circumferencial direction both ends
Thick T1 is more than the wall thickness T2 (T1 ＞ T2) at the both ends of retainer axial direction.Like this, first easily contacted with ball 30 is thickened
The wall thickness T1 at part 44a retainer circumferencial direction both ends, reliability raising is realized so as to the allowance increase of abrasion.
In addition, the wall thickness T2 at Part I 44a retainer axial direction both ends is thinned, so as to can accordingly thicken it is in main body 42,
The wall thickness T3 of the annulus of ball pocket 42a retainer axial direction both sides, improves the intensity for circumferential stress.
Retainer 540~840 shown in Figure 12 (a)~(d) is on guide surface 48 formed with recess (scatterplot region).As this
Sample, recess is set on guide surface 48, so as to mutually slide the guide surface 48 to connect and raceway circle (outside in the present embodiment
The inner peripheral surface of circle 20) between gap easily form liquid film (such as the liquid film formed by the propellant of turbine pump), and then lubrication
Property and wear resistance improve.Specifically, on the guide surface 48 of Figure 12 (a) retainer 540, formed as recess along guarantor
The axially extending multiple groove 48a of holder.Groove 48a is equally spaced formed as stepped along retainer circumferencial direction.In Figure 12 (b)
Retainer 640 guide surface 48 on, as recess, along the circumferential direction equally spaced formed with relative to the axial center of retainer
The groove 48b for the chevron shape being symmetrically inclined.For example, in the case that the face observed in Figure 12 (b) rotates in the direction of the arrow,
If as illustrated, making groove 48b to make direction of rotation tilt in advance in a manner of the extension of lateral retainer axial end portion side, then with
The rotation of retainer 640, liquid film supplies to retainer axial direction center side, and can improve lubricity.In Figure 12 (c) retainer
Shallow concave recess 48c is formed on 740 guide surface 48.On the guide surface 48 of Figure 12 (d) retainer 840, as recess,
It is distributed shorter groove 48d.The groove 48d of illustrated example is axially extending along retainer.It should be noted that in Figure 12 retainer
Formed with weld mark W similar to the above on 540~840, but eliminate weld mark W diagram.
The depth of above-mentioned recess be 1~4 μm or so it is most effective, but in view of resin portion 44 abrasion, be preferably set to
The size of gap equal extent between Fig. 1 guide surface 48 and outer ring 20, for example, less than 50 μm.Recess as described above can
With for example by being formed when setting convex portion on mould and in injection moulding.Alternatively, it is also possible to shape resin portion 44
Afterwards, by forming recess as described above to guide surface implementation machining (such as turnery processing), shot-peening.
The recess formed on the surface of the main body 42 of retainer 940 shown in Figure 13 is different from above-mentioned embodiment.Tool
For body, the both sides in the outer peripheral face of main body 42, ball bag 42a retainer axial direction, as recess, formed along retainer
The groove 42b of circumferentially continuous ring-type.In addition, on the ball bag 42a of main body 42 inner peripheral surface, as recess, formed along ball
The groove 42c of bag 42a circumferentially continuous ring-type.These grooves 42b, 42c are for example formed by machining, plastic working.
It should be noted that the recess formed in main body 42 can also be set to groove, the scrobicula shape extended to direction unlike those described above
Recess.Recess is formed alternatively, it is also possible to either one in the outer peripheral face of main body 42 and ball pocket 42a inner peripheral surfaces.In addition,
As shown in figure 14, if making the width of recess 42b, 42c inner side than the narrow width of open side, the anti-of resin portion 44 can be improved
De- effect.In addition, to the surface of main body 42,, can be by main body when implementing above-mentioned roughened processing in addition to groove 42b, 42c
42 is more firmly affixed with resin portion 44.
In the above-described embodiment, showing, which makes retainer 40 be slided with the inner peripheral surface of outer ring 20, connects and guides
Outer ring guiding rolling bearing, but be not limited to this, the present invention can also be used to making the outer of retainer 40 and inner ring 10
Side face slides the rolling bearing for the inner ring guiding for connecting and guiding.In this case, the Part II 44b of resin portion 44 is set
Put on the inner peripheral surface of main body 42, Part II 44b inner peripheral surface plays function (omitting diagram) as guide surface 48.
Figure 15 represents to be incorporated with the rocket engine turbine pump of above-mentioned angular contact ball bearing 1.The turbine pump is liquid
The turbine pump being compressed to liquid oxygen gas in hydrogen/liquid oxygen secondary firing formula rocket engine.Though it should be noted that
Diagram so is eliminated, but also possesses the same whirlpool being compressed to liquid hydrogen in the secondary firing formula rocket engine
Wheel pump.The turbine wheel shaft 71 of turbine pump is in the fluid combustion gas from being flowed from precombustion chamber pump intake to precombustion chamber pump discharge
After initial driving, formally driven from the fluid combustion gas from turbine gas entrance to turbine gas output flow.So
Afterwards, the liquid oxygen gas flowed into from main pump inlet is compressed and discharged from main pump outlet, supplied to combustion chamber.Turbine wheel shaft 71
Formed by the high Ni-based superalloy of the fatigue strength under extremely low temperature, such as nichrome material.Turbine wheel shaft 71 is by making two
The multiple row angular contact ball bearing 72 that individual angular contact ball bearing 1 combines supports.Form a pair of multiple row angular contact ball bearing 72
The contact angle of angular contact ball bearing 1 is symmetrical relative to axle orthogonal plane.
Above-mentioned angular contact ball bearing 1 can be not only used for rocket engine turbine pump, can be used for other use
On the way.For example, the equipment used under vacuum conditions with equipment such as universe such as moonlets can be loaded.It is in addition, above-mentioned
Angular contact ball bearing 1 is not limited to the purposes used under the low temperature environment of pole, can also make in the environment of for example more than normal temperature
With.
In addition, in the above-described embodiment, the diagonal contact ball bearing of rolling bearing as the present invention is illustrated,
But this is not limited to, it is contemplated that the present invention may be use with the roller such as the ball bearing of other species, cylinder roller bearing, taper roll bearing
Bearing.
Description of reference numerals
1 angular contact ball bearing
10 inner rings
20 outer rings
30 balls
40 retainers
42 main bodys
42a ball pocket
44 resin portions
44a Part I
44b Part II
46 ball bag faces
48 guide surfaces
50 cavitys
52 first cavitys
54 second cavitys
60 cast gates
W weld marks
Claims (6)
1. a kind of cage for rolling bearing, it is disposed between a pair of raceway circles, and multiple rolling elements are maintained at into predetermined bits
The cage for rolling bearing put, wherein, possess：
Circular main body, it has the multiple ball pocket for housing the rolling element；And
Resin portion, it by regarding the main body as mosaic component and carries out injection moulding using the resin comprising kollag
Form,
The resin portion is provided integrally with Part I and Part II, and the Part I is arranged on the ball pocket of the main body
Inner peripheral surface, and formed with multiple ball bag faces for connecting are slided with each rolling element, the Part II is arranged on the main body
Inner peripheral surface or outer peripheral face, and formed with sliding the guide surface that connects with the raceway circle of a side in the pair of raceway circle,
The weld mark of the resin portion is formed in the position do not exposed retainer circumferencial direction both ends or not in the ball bag face,
The Part I of the resin portion retainer circumferencial direction both ends wall ratio retainer axial direction both ends wall
It is thick.
2. cage for rolling bearing according to claim 1, wherein,
The weld mark is made only in the side on the retainer axial direction in the ball bag face.
3. cage for rolling bearing according to claim 1 or 2, wherein,
The resin portion is so that the thermoplastic resin as principal component resin accounts for 45vol%~80vol%, kollag accounts for
The ratio allotment that 20vol%~40vol%, reinforcing material account for 0vol%~15vol% forms.
4. a kind of rolling bearing, it possesses：
Cage for rolling bearing any one of claims 1 to 3；
A pair of raceway circles；And
Multiple rolling elements.
5. a kind of manufacture method of cage for rolling bearing, the cage for rolling bearing configuration a pair of raceway circles it
Between, and multiple rolling elements are maintained at assigned position, in the manufacture method of the cage for rolling bearing,
By regarding the main body of annular shape as mosaic component and carrying out injection moulding using the resin material comprising kollag
To form resin portion, the circular main body has the multiple ball pocket for housing the rolling element, and the resin portion is integratedly
With Part I and Part II, the Part I is arranged on the inner peripheral surface of the ball pocket of the main body, and formed with it is each
Individual rolling element slides the multiple ball bag faces to connect, and the Part II is arranged on the inner peripheral surface or outer peripheral face of the main body, and
Formed and slide the guide surface to connect with the raceway circle of a side in the pair of raceway circle, the Part I of the resin portion is being kept
Wall thickness of the wall ratio at device circumferencial direction both ends at retainer axial direction both ends is thick,
It is provided with and is used in the forming surface that end face on the retainer axial direction of the Part II to the resin portion is molded
Project the cast gate of the material of resin portion.
6. the manufacture method of cage for rolling bearing according to claim 5, wherein,
The cast gate is diaphragm gate.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013-115497 | 2013-05-31 | ||
| JP2013115497A JP6178117B2 (en) | 2013-05-31 | 2013-05-31 | Roller bearing cage, rolling bearing, and method of manufacturing rolling bearing cage |
| PCT/JP2014/062127 WO2014192503A1 (en) | 2013-05-31 | 2014-05-02 | Rolling bearing retainer, rolling bearing, and production method for rolling bearing retainer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105247231A CN105247231A (en) | 2016-01-13 |
| CN105247231B true CN105247231B (en) | 2018-03-30 |
Family
ID=51988541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480029901.1A Expired - Fee Related CN105247231B (en) | 2013-05-31 | 2014-05-02 | The manufacture method of cage for rolling bearing, rolling bearing and cage for rolling bearing |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US9657779B2 (en) |
| EP (1) | EP3006753B1 (en) |
| JP (1) | JP6178117B2 (en) |
| CN (1) | CN105247231B (en) |
| WO (1) | WO2014192503A1 (en) |
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| CN108779804B (en) * | 2016-02-26 | 2020-02-11 | 日本精工株式会社 | Method for manufacturing bearing retainer |
| JP2017172736A (en) * | 2016-03-24 | 2017-09-28 | Ntn株式会社 | Resin-made cage for bearing, manufacturing method of the same and rolling bearing |
| JP6864437B2 (en) * | 2016-03-25 | 2021-04-28 | Ntn株式会社 | Rolling bearing |
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| CN106168254B (en) * | 2016-08-23 | 2018-03-16 | 新昌县勤勉贸易有限公司 | A kind of motor bearings |
| JP6764741B2 (en) * | 2016-09-23 | 2020-10-07 | 株式会社Ihi | Cage and its manufacturing method, and rolling bearings |
| JP6933007B2 (en) * | 2017-06-09 | 2021-09-08 | 株式会社ジェイテクト | Manufacturing method of touchdown bearing and touchdown bearing |
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| CN108099213A (en) * | 2017-12-12 | 2018-06-01 | 珠海格力智能装备有限公司 | Bearing Hot welding and with its bearing group installing it is standby |
| JP7236902B2 (en) * | 2018-03-30 | 2023-03-10 | Ntn株式会社 | Resin cage and rolling bearing |
| US10837488B2 (en) | 2018-07-24 | 2020-11-17 | Roller Bearing Company Of America, Inc. | Roller bearing assembly for use in a fracking pump crank shaft |
| JP7270446B2 (en) | 2019-04-02 | 2023-05-10 | Ntn株式会社 | rolling bearing |
| EP3963123A4 (en) * | 2019-04-29 | 2023-01-11 | Schaeffler Technologies AG & Co. KG | An aluminum alloy cage and a processing method of the aluminum alloy cage |
| WO2020262029A1 (en) | 2019-06-25 | 2020-12-30 | ミネベアミツミ株式会社 | Ball bearing |
| CN113840987B (en) * | 2019-06-25 | 2022-08-19 | 美蓓亚三美株式会社 | Ball bearing |
| JP7218703B2 (en) * | 2019-10-08 | 2023-02-07 | 中西金属工業株式会社 | Manufacturing method of double ring type resin cage |
| US11009074B1 (en) * | 2019-11-11 | 2021-05-18 | Aktiebolaget Skf | Lightweight bearing cage for turbine engines and method of forming a lightweight bearing cage |
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| FR3112826B1 (en) * | 2020-07-27 | 2023-01-20 | Safran Aircraft Engines | Drainage Groove Bearing Cage |
| CN113090663B (en) * | 2021-04-01 | 2021-12-10 | 山东金帝精密机械科技股份有限公司 | Bearing retainer |
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Also Published As
| Publication number | Publication date |
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| WO2014192503A1 (en) | 2014-12-04 |
| EP3006753A4 (en) | 2016-11-30 |
| JP2014234846A (en) | 2014-12-15 |
| EP3006753B1 (en) | 2018-11-07 |
| JP6178117B2 (en) | 2017-08-09 |
| EP3006753A1 (en) | 2016-04-13 |
| CN105247231A (en) | 2016-01-13 |
| US20160108965A1 (en) | 2016-04-21 |
| US9657779B2 (en) | 2017-05-23 |
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